With the U.S. and global markets having their worst month in years, here is a breakdown on how bad the damage has been since the declines started last week:
U.S. markets, as of Monday's close:
The Dow Jones industrial average: down 10.3 percent in August, and down 11 percent in 2015.
The Standard & Poor's 500 index: down 10 percent this month, and down 8.1 percent this year.
The Nasdaq composite: down 11.7 percent this month, and down 4.4 percent this year.
Europe:
Germany's DAX: down 14.7 percent in August, and down 1.6 percent in 2015.
France's CAC-40: down 13.8 percent this month, but up 2.6 percent this year.
U.K.'s FTSE 100: down 11.9 percent this month, down 10.2 percent this year.
Asia:
Japan's Nikkei index: down 9.9 percent in August, up 6.2 percent in 2015.
Hong Kong's Hang Seng: down 13.7 percent this month, and down 10 percent this year.
China's Shanghai Composite: down 12.4 percent this month, and down 0.8 percent this year.